Your 10-Codes of the Day

10-70 = Fire at .......

10-13 = Advise weather and road conditions

10-92 = Your transmitter is out of adjustment

10-95 = Transmit dead carrier for 5 seconds

10-8 = In Service, subject to call

Your Truck driving Definitions of the Day

Horsepower (hp)

Measure of power (the amount of work that can be done over a given amount of time). One horsepower is defined as 33,000 foot-pounds of work in one minute. Example: Lifting 33,000 pounds one foot in one minute, or lifting 3300 pounds ten feet in one minute.

Fifth Wheel

Coupling device attached to a tractor or dolly which supports the front of a semitrailer and locks it to the tractor or dolly. The fifth wheel's center is designed to accept a trailer's kingpin, around which the trailer and tract or or dolly pivot in turns.

Lift Axle

Extra, unpowered axle needed only when the vehicle is loaded, allowing it to meet federal and state vehicle weight standards. The lift axle is mounted to an air spring suspension that raises the axle when it is not required.

Yard Jockey

Person who operates a yard tractor.

Runaway Truck Ramp

Emergency area adjacent to a steep downgrade that a heavy truck can steer into after losing braking power. Usually two or three lanes wide and several hundred feet long, the ramp is a soft, gravel-filled pathway which absorbs the truck's forward momentum, bringing it to a safe stop. Depending on the surrounding terrain, the ramp may be level or run up or down hill.